Steam-boiler.



A. FERNNDEZ.

STEAM BOILBR.,

APPLICATION FILED MAB., 1'1, 1914.

1,105,896.` Patented Aug. 4, 1914.

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STEAM-Beinen.

Specification of Letters Patent.

Patented Aug. 4,1 1914.1

Application filed March 17, 1914.` Serial No. 825,392.

To all whom it may concern Be it known that-I, ANGEL FERNNDEZ, a citizen of the Republic of Cuba, residing at Habana, Cuba, have invented certainnew `and useful Improvements in Steam-Boilers7 of which the following is a specification.`

`The present invention relates to improvements in steam boilers, particularly to `internally red boilers and the `improvements consist mainly in cuttingthelower part of` per and lower parts of internally tired boilers a forced circulation of the water' withinlthe boiler must beestablished as long was steam is generated by using the hydrokineter of Weir.; By means of this auxiliary apparatus alone the non-uniform;dilatation of the boiler can be avoided as the upper layers of `strata of the water `will rapidly evaporate while the water near the bottom is nearly freezing. The hydrokineter by means of an auxiliary boiler .which com- `Inonly works under a pressure :of thirty pounds per square inch, will hold` the water `at the bottom of the main boiler at a temperature of 130 `degrees C. However modern boilers Work with higher pressure and `therefore the hydrokineter will become inefficient while on the other hand the` temperature and the dilatationof the upper g and the `lower part of the bottom of the boiler mantle which latter is hardly dilat-` ing should also be taken into consideration.

Another cause for the non-uniforml dilata,-`

tion is the refrigerationoi" the wateringithe lower part of the boiler which tends to hold that part of the boiler at a lower` temperature than the remaining part.

The cause of the deformation or flattening of many `of the cylindrical boilers now in use is only to be seen in the non-uniform dilatation of the upper and lower half cylinders, in: consequence of which the boiler: loses its `geometrical form and takes the` form of an ellipsoid unable to withstand the highl pressure which the cylindrical form was able to stand.

ln the accompanying drawing: `Figure 1160 ris a'ifroiit view of a boiler partly in vertical sectionwith three interior fire-boxes according to the present invention.

saine. l `ig. 3 is a detail view of the connection between the handles of two adjacent lire-boxes intransversal section. Fig. 4 is an end view of a boiler with two lire-boxes ac# u cording to the present invention.` F ig. 5 1s i a similar view of a boiler with one lire-"box` accordingto the present invention.

The mantle 1 of the boiler is cut straight on its lower part `so as to `form `ineross sec-` tion about 'g of a circle,and the mantles 2 of the lire-boxes 3 are shaped accordingly. The exterior walls '2 of the mantles 2 of the lat-` eral lire-boxes 3 and the correspondingswall of the -mantle l are united bynieans `of a double row of rivets and the' connection is supported by lateral posts 4 upon which said mantle rests. The side walls 2 of the mantles `2 of two adjacent fire-boxes `are con- Fig.2isa` vertical longitudinal section. through the nected by means of a steel plate 5 forming in section an `inverted horse-shoe the inclined end walls of which aresecuied to said walls of the adjacent fire-boxes by means of rivets.`

'lhe plates 5 are secured to the upper part of the boiler by means of a row of vertical rods `G which extend through the base of* the liorse-shoes and the mantle 1 of the boiler. Their `lower ends being secured by the intermediary of shoes 7 and nuts 8V while their uppcrends are secured to the boiler mantle by the `intermediary of a saddle 9 and nuts 10. Theii'ods 6 pass betweenthe vertical rows of the fines 11 `of the boiler` which are mounted in thc front plate l2 and the vertical transversal plate 13 which limits in front the fire-box or smoke box 14 which is also limited by a wall 15 riveted to the plate 13 and the rear part of whichis vertical and parallel to the rear plate `16 of the boiler which isfriveted `to the mantle 1 `and 1..

totheinantles 2 of the lateral fire-boxes 3.

The mantle 1 of the boiler and the Inantles 2 of the fire-boxes 3 are secured to the horseshoe pieces 5 by means of a row of horizon` tal transversal rods 17 which eithertrom one side of the mantle cross the horse-shoe (Figs. 1 and 2), or which tangentially pass the same as shown in Fig. 4. In the `former case they extend through the mantles of both adjacent fire-boxes and are provided at their outer ends with a thread for the recep vtion of nuts 18 engagingyshoes 19 interposed between said nuts and said walls, while. the

outer ends of the rods 17 of the two lateral' A lupon their outer threaded` ends by the intermediary of vshoes 21, while'theirmiddle parts pass the lower end of the horse-shoe 5.

T he outer. extremities' of the grate barsl 22 are mounted below the geometrical axis of. the mantles 2 upon transversal angle-irons .i 23and 2tand their inner ends rest.` upon inventedlT-beams in the center. The vrire box 14C v'isvclosed at the bottom by a metal bridge 26 of angular crosssection .uponfwhich 'the tire brick wall 27fis located which is soy disposed ithat the. llames and the smoke are i guided upwardly; said bridge 26'false-carries-a lire brick floor 28. The' ash `pit `is y formed with a bottom plate 29 with inclined walls and is adapted to receive water and its sidewalls aresecuredito the side wallsl or the mantle 1 by means of screws 'or the like.

Atxthefront part'o` the head plate 12 is disposed the; smoke chamber() for the ex haust of the smoke and ire gases through the chimney. Thedirection of flow of the fire gases isndicated by arrows, see Fig. 2.

According to the construction yillustrated in Figie Vthe boiler has two interiorly disposed '.{ire-boxes the construction o which is entirely analogous tothat of a boiler having three fire-boxes and the transversal rods 17 `pass under the horse-shoe pieces 5, while the l dotted lines indicate the same parts shown in Figsl and 2 in the same positions.` f

In Fig. 5 a boiler is illustrated provided with a single interior fire-box, and in which `the ,horse-shoe pieces 5 andthe vertical rod 6 rare dispensed with and which showsv only the horizontal rods 17, rthe upwardly in-y clined ends of which are secured to the similarly `inclined ends of 'the boilers by means )of screws 31 and nuts 32.

I claim:

1.- In boilers of the character described the combination of an exterior mantlefor said' boiler cut away 'at its lower .partireboxes at s'aidcut away part of theboiler, mantles for said fire-boxes also vcut away at their lower parts, and' inverted horse-shoe pieces .riveted to the ends of `two adjacent of the intermediary lire-boxes, and means for connecting the. ends of the exterior boiler man* tles with the .ends ofthe two lateral lireboxes i 2. In a :boiler of the4 character described the combination of an exterior mantle :Eork

said. boiler having its lower yfifth part cut awayfsupports for said boiler, ire-boxes be` low the'` geometricalaxis of said mantle, ai'

mantle for each of saidfire-boxes, means Jfor securing the outer end'sof saidboxes'to thel outer ends of the mantles, and meansv for 0f tubesxzwithin. said .boiler andmeans for; i' i" supporting the vertically arranged, nests ofk said tub'esseoured to the outer end of ythe mantle securing means forr two adj acent` ileboxes andtothe outer face-ofthe boiler mantle respectively.

3.1n a boiler of thecharacter ,described the combination of an exterior mantle"r forsaid boiler havingits lower fifth part `cut .y

away, supports for said boiler, fire-boxes below the geometrical axis of said mantle, a,

mantle for each of said boxes, means `ior securingthe outery endsof said boilery mantle tothe outerends'oi:l the mantlessof `the two lateraliire-boxes, inverted horse-shoe pieces having their free endsconnectedwith the lower ends ofthe vmantles of' two adiacent fire-boxes, a'horizontall rod 'connecting two ofsaid mantles at the placeof connection through said horse-shoe piecesI andsecured in position, an ash pit belowl saidpire-boxes having inclined sidewalls andsfsecured to said boilery mantles, rods connecting the ends "of each of the fire-boxe`s, and .grate bars resting with their extreme outerendsupon angle irons and with theirinner ends:l upon an in4 verted T-.beam secured to the boilerfvplates, and rods for connecting said. horse-shoe pieces withthe top oftheboiler mantles...

In testimonygwhereof I 'affix my `signature i in presence of two witnesses.

ANGEL FERNNDEZ;

`Vitnesses:

RICARDO Monifi, RAOUL F. WASHINGTON.

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